pingle

例句：

1. 1. The children were playing with the pebbles on the beach.
   孩子们在海滩上玩着小石子。
2. 2. He picked up a pebble and threw it at the wall.
   他捡起一块石头，朝墙上扔去。
3. 3. The pebble rolled down the hill and fell into the river.
   那块小石子滚下山坡，掉进了河里。